As the prime target of the enemy during the Information Warfare Era, shipboard communication system is very important for the warship combat capability. The abilities of data anti-damage and data backtracking are the essential demand in the design of the shipboard communication system. It studies the hidden danger of the current mainstream data storage mode, and presents a communication system of data storage based on the blockchain technology. The anti-damage ability of the information data in the communication system is improved by the decentralized technology of the blockchain, and the data backtracking is performed by the information data interaction generated during the task by using the tamper-resistant characteritics of the blockchian..